Smart electronics and MEMS are employed to sense and control the drag in aircraft structures. The sensors are fabricated with interdigital transducers printed on a piezoelectric polymer. They in turn are mounted onto an ultra thin Penn State's novel RF (Radio Frequency) antenna. The sensors are designed to measure both pressure and shear of the fluid flow on aerospace structures. The wave form measurements may be monitored at a remote location either at the cockpit or elsewhere via the antennas in the sensors and an outside antenna. The integrated MEMS (MicroElectroMechanical System) actuators which comprise of cantilever-, diaphragm- and microbridge-based MEMS with suitable smart electronics etched onto the structure are controlled by the built-in antennas through feedback and feedforward control architecture. The integration of such materials and smart electronics into the skin of airfoil is ideal for sensing and controlling drag. The basic idea of this concept involves detection of the point of transition from laminar to turbulent flow and transmitting acoustical energy into the boundary layer so that the low energy fluid particles accelerate in the transverse direction and mix with the high energy flow outside of the boundary layer. 3D microriblets can be fabricated using stereo lithography and UV curable conducting polymers. The control of drag using these active microriblets are outlined.


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    Title :

    Smart electronics ans MEMS for aerospace structures


    Additional title:

    Messung und Beeinflussung des Luftwiderstandes von Flugzeugen mit intelligenten mikroelektronischen und mikromechanischen Strukturen


    Contributors:


    Publication date :

    1995


    Size :

    7 Seiten, 3 Bilder




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Smart Structures, MEMS and Smart Electronics for Aircraft

    Varadan, V. K. / Varadan, V. V. / Advisory Group for Aerospace Research and Development | British Library Conference Proceedings | 1996


    Smart structures, MEMS and smart electronics for aircraft

    Varadan, V.K. / Varadan, V.V. | Tema Archive | 1996



    Wireless Smart Conformal MEMS-Based Sensors for Aerospace Structures

    Varadan, V. K. / Varadan, V. V. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1998